| Montag, Carl | Meudon | 21, 48, 200, 260, 287, 347, 348, 351, 356, 370, 421 |
| Meienberg, L., Frau | Thalwil | 47 |
| Münzel, Franz Xaver | Baden, Aargau | 56 |
| Mauerer, Karl, Dr. | Lahr/Schwarzwald | 56, 271 |
| Katholischer Konfessionsteil des Kantons St. Gallen. Administrationsrat / Meyer, ..., Herr Dr. | Sankt Gallen | 57 |
Moschetti, Andrea, Prof. /
Museo Civico di Padova | Padua | 64, 97 |
| Matter, Doris | Zürich | 69 |
| Madritsch, Karl | Zürich | 23, 142 |
| Wälchli, Gottfried, Dr., Konservator / Martin-Disteli-Museum | Olten | 108, 109, 361, 391 |
| Moll, Carl | Wien | 132 |
| Meyer, Robert Franz, Dr. | Zürich | 137, 167, 267, 336, 353, 358, 368, 394, 452, 466, 480, 497, 498 |
| Gottfried-Keller-Stiftung / Meyer-Rahn, Hans, Dr. | Luzern | 143, 162, 178, 309, 310 |
| Verein der Museumsfreunde in Wien | Wien | 218, 410 |
| Musée d'art et d'histoire, Genf / Gielly, Louis | Genève | 223 |
| Meyer-Hungerbühler, Martha | Zollikon | 225 |
| Mayenfisch, Hans E., Dr. | Zürich | 225, 401, 427 |
| The Museum of Modern Art, New York, NY | New York, NY | 238, 248, 453 |
| Philadelphia Museum of Art | Philadelphia, Pa. | 239 |
| Metropolitan Museum of Art | New York, NY | 240, 467 |
| The Cleveland Museum of Art | Cleveland, Ohio | 244, 464 |
| Museum of Fine Arts, Boston | Boston, Mass. | 245, 491 |
| Maschinenmeister-Vereinigung Zürich / Engesser, Tony | Zürich | 246 |
| Müller, Josef | Solothurn | 340 |
| Madeline, André | Paris | 350 |
| San Francisco Museum of Art | San Francisco, Calif. | 335, 376 |
| Morgenthaler, Ernst | Zürich-Höngg | 384 |
| Mayer-Schönfeld, ..., Frau | Basel | 387 |
| Maag, Heinrich | Zürich | 436 |
Musée des beaux-arts, Dijon /
Quarré, Pierre | Dijon | 439 |
| Munz, Anton | Zürich | 449 |
| Zürcher Kunstgesellschaft | | 468 |
